Sony KV-XA21M8J Service Manual ▷ View online
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KV
-XA21M8J/XA21MSJ
-XA21M8J/XA21MSJ
RM-952
Additional Information
22
• Check the antenna cable and connection
on the TV, VCR and on the wall.
• Press SELECT until “MANUAL
PROGRAM” appears on the screen, then
preset the channel again.
preset the channel again.
• Check the antenna type (VHF/UHF).
Contact a Sony dealer for advice.
• Adjust the antenna direction. Contact a
Sony dealer for advice.
• Try using a booster.
• Turn off or disconnect the booster if it is
in use.
• If the sound of some channels are noisy,
select the channel, then select the
appropriate TV system (TV SYS).
appropriate TV system (TV SYS).
• Check the power cord, antenna and the
VCR connections.
• Press ?/1 (power).
• Press ! (main power) on the TV to turn
off the TV for about five seconds, then
turn it on again.
turn it on again.
Snowy picture
Noisy sound
Distorted picture
Noisy sound
Good picture
Noisy sound
No picture
No sound
Troubleshooting
If you find any problem while viewing your TV, please check the following guide. If
any problem persists, contact your Sony dealer .
any problem persists, contact your Sony dealer .
Possible cause
Symptom
Solutions
• Connection is loose or
the cable is damaged.
• Channel presetting is
inappropriate or
incomplete.
incomplete.
• The antenna type is
inappropriate.
• The antenna direction
is inappropriate.
• Signal transmission is
low.
• Broadcast signals are
too strong.
• The TV system setting
or channel presetting
is inappropriate or
incomplete.
is inappropriate or
incomplete.
• The power cord,
antenna or VCR is not
connected.
connected.
• The TV is not turned
on.
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4
11
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4
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Additional Information
23
Good picture
No sound
Dotted lines or
stripes
stripes
Double images or
“ghosts”
“ghosts”
No color
Abnormal color
patches
patches
• Press 2 + to increase the volume level.
• Press % to cancel the muting.
• Do not use a hair dryer or other
equipment near the TV.
• Adjust the antenna direction for
minimum interference. Contact a Sony
dealer for advice.
dealer for advice.
• Use a highly directional antenna.
• Use the fine tuning (FINE) function.
• Adjust the antenna direction. Contact a
Sony dealer for advice.
• Turn off or disconnect the booster if it is
in use.
• Press SELECT until “COLOR” appears
on the screen, then press + or – to adjust
the color level.
the color level.
• Press SELECT until “COLOR SYS ”
appears on the screen, then check the
color system setting (usually set this to
“AUTO”).
color system setting (usually set this to
“AUTO”).
• Adjust the antenna direction. Contact a
Sony dealer for advice.
• Keep external speakers or other electrical
equipment away from the TV. Do not
move the TV while the TV is turned on.
Press ! (main power) on the TV to turn
off the TV for about five minutes, then
turn it on again.
move the TV while the TV is turned on.
Press ! (main power) on the TV to turn
off the TV for about five minutes, then
turn it on again.
Possible cause
Symptom
Solutions
continued
• The volume level is
too low.
• The sound is muted.
• There is local
interference from cars,
neon signs, hair
dryers, power
generators, etc.
neon signs, hair
dryers, power
generators, etc.
• Broadcast signals are
reflected by nearby
mountains or
buildings.
mountains or
buildings.
• The antenna direction
is inappropriate.
• Use of a booster is
inappropriate.
• The color level setting
is too low.
• The color system
setting is
inappropriate.
inappropriate.
• The antenna direction
is inappropriate.
• The magnetic
disturbance from
external speakers or
other equipment, or
the direction of the
earth’s magnetic field
may affect the TV.
external speakers or
other equipment, or
the direction of the
earth’s magnetic field
may affect the TV.
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KV
-XA21M8J/XA21MSJ
-XA21M8J/XA21MSJ
RM-952
Additional Information
24
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Picture slant
(KV-XG25M8J only)
(KV-XG25M8J only)
Lines moving across
the TV screen.
the TV screen.
The
1
indicator on
your TV flashes red
a number of times
between 3-second
intervals.
a number of times
between 3-second
intervals.
TV cabinet creaks.
A “boom” sound is
heard when the TV
is turned on.
heard when the TV
is turned on.
Troubleshooting (continued)
Possible cause
Symptom
Solutions
Good morning!
• The magnetic
disturbance from
external speakers or
other equipment, or
the direction of the
earth’s magnetic field
may affect the TV.
external speakers or
other equipment, or
the direction of the
earth’s magnetic field
may affect the TV.
• There is interference
from external sources,
e.g., heavy
machineries, nearby
broadcast station.
e.g., heavy
machineries, nearby
broadcast station.
• Your TV may need
service.
• Changes in room
temperature
sometimes make the
TV cabinet expand or
contract, making a
noise. This does not
indicate a malfunction.
sometimes make the
TV cabinet expand or
contract, making a
noise. This does not
indicate a malfunction.
• The TV’s
demagnetizing
function is working.
This does not indicate
a malfunction.
function is working.
This does not indicate
a malfunction.
Page
• Keep external speakers or other electrical
equipment away from the TV.
•Press SELECT until “PIC ROTATION”
appears on the screen, then press + or –
to adjust the picture until it is optimal.
to adjust the picture until it is optimal.
•Use the fine tuning (FINE) function.
• Contact your nearest Sony service center.
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Additional Information
25
Overview of controls
TV front panel
Not used for this model
PROGR
SELECT
AUTO
PROGR
PROGR
2
(MONO)
KV-XA21MSJ/XA21M8J
Page
Function
Button
Preset channels automatically.
5
Select the desired item.
12
Select program number.
13
Turn off completely or turn on
13
the TV.
Adjust volume.
Adjust volume.
13
Standby indicator.
13
Select TV or video input.
14
Wake Up indicator.
15
Headphone jack.
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AUTO PROGR
SELECT
PROGR +/–
!
SELECT
PROGR +/–
!
2
+/–
1
t
i
2
L(MONO)
R
PROGR
SELECT
AUTO
PROGR
PROGR
2
L(MONO)
R
PROGR
SELECT
AUTO
PROGR
!
continued
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KV
-XA21M8J/XA21MSJ
-XA21M8J/XA21MSJ
RM-952
Additional Information
26
Remote Control
TV
1
2
3
4
6
7
8
9
÷
0
5
JUMP
SOUND
MODE
FAVORITE
PROGR
Á
The names/symbols of
buttons on the remote are
indicated in different colors to
represent the available
functions.
buttons on the remote are
indicated in different colors to
represent the available
functions.
Label color
White
Green
Button function
For general TV
operations
operations
For Teletext
operations
operations
Page
Button
Function
Overview of controls (continued)
Select the desired item.
11
Adjust value.
11
Select program number.
13
Input numbers.
13
Adjust volume.
13
Turn off temporarily or
13
turn on the TV.
Select TV or video input.
Select TV or video input.
14
Display the TV program.
14
Mute the sound.
14
Display on-screen information.
14
Jump to previous program
14
number.
Set TV to turn on automatically.
15
Set TV to turn off automatically.
15
Select picture mode.
16
Select sound mode.
16
Display favorite channels.
19
Select stereo/bilingual mode.
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Display Teletext broadcast.
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Display Teletext service contents.
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Stop Teletext display from
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scrolling.
Reveal concealed information.
Reveal concealed information.
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Enlarge the Teletext display.
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Show TV screen while
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waiting for Teletext page.
Access a FASTEXT menu.
Access a FASTEXT menu.
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SELECT
+/–
PROGR +/–
0 – 9, -
2
+/–
PROGR +/–
0 – 9, -
2
+/–
?/1
t
a
%
JUMP
Timer operations
PIC MODE
SOUND MODE
FAVORITE
Stereo/bilingual operations (Not used for
this model)
A/B
SOUND MODE
FAVORITE
Stereo/bilingual operations (Not used for
this model)
A/B
Teletext operations (Not used for this model)
KV-XG25M8J/XA21MSJ/XA21M8J)
KV-XG25M8J/XA21MSJ/XA21M8J)
x
(red, green,
yellow, blue)
– 20 –
KV
-XA21M8J/XA21MSJ
-XA21M8J/XA21MSJ
RM-952
2-5. J2 BOARD AND TERMINAL
BRACKET REMOVAL
2 Terminal bracket
3 J2 Board
(KV-XA21MSJ only)
(KV-XA21MSJ only)
One screw
(+BVTP 4x16)
(+BVTP 4x16)
1
SECTION 2
DISASSEMBLY
2-1. REAR COVER REMOVAL
2-2. SPEAKER REMOVAL
2-3. CHASSIS ASSY REMOVAL
2-4. F BRACKET REMOVAL
2 Two screws washer head
(+P4 x16)
(+P4 x16)
3 F Board bracket
5 Two claws
1 Three connectors
4 F board
1 Two screws
(+BVTP 4
(+BVTP 4
× 16)
2 Six screws
(+BVTP 4
(+BVTP 4
× 16)
3 Rear Cover
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